I bought a pair of Nike Mamba Rage for my son about 3 months ago. He told me there was a sharp piece of metal that was protruding through the interior heel of the shoe and it cut his heel. I inspected the shoe and not sure if it was metal or plastic, but it was poking through the fabric and he could not wear the sneakers. I called Nike and the advised that since I purchased them at $#*!'s Sporting Goods they would not warranty their defective sneakers. They said it would need to be purchased from one of their "honor" stores. If they sell your product then you should stand behind it. IDK what an "honor" store is but as you see from their reviews Nike is not honorable! $#*!'s store exchanged the sneakers without an issue. You lost a customer Nike!